/* DRS Flotte Hilfe - Styles
   Mobile-first PWA for fleet vehicle assistance */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
  /* Colors */
  --color-emergency: #DC2626;
  --color-emergency-hover: #B91C1C;
  --color-success: #16A34A;
  --color-success-light: #DCFCE7;
  --color-info: #2563EB;
  --color-info-hover: #1D4ED8;
  --color-primary: #1E3A5F;
  --color-secondary: #64748B;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-border: #E2E8F0;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-small: 14px;
  --font-size-body: 16px;
  --font-size-h2: 22px;
  --font-size-h1: 28px;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Touch targets */
  --touch-target-min: 44px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-body);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  min-height: 100dvh;
}

/* ========================================
   Typography
   ======================================== */
h1 {
  font-size: var(--font-size-h1);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--spacing-md);
  color: var(--color-primary);
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 var(--spacing-md);
  color: var(--color-primary);
}

h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 var(--spacing-sm);
  color: var(--color-text);
}

p {
  margin: 0 0 var(--spacing-md);
}

a {
  color: var(--color-info);
  text-decoration: none;
}

a:hover, a:focus {
  text-decoration: underline;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--spacing-md);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.page-header {
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.page-content {
  flex: 1;
}

/* Back navigation */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-secondary);
  font-size: var(--font-size-body);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  min-height: var(--touch-target-min);
}

.back-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 100%;
  min-height: var(--touch-target-min);
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

/* Emergency button (red) */
.btn-emergency {
  background-color: var(--color-emergency);
  color: white;
}

.btn-emergency:hover {
  background-color: var(--color-emergency-hover);
}

/* Primary button (dark blue) */
.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: #15293F;
}

/* Info button (blue) */
.btn-info {
  background-color: var(--color-info);
  color: white;
}

.btn-info:hover {
  background-color: var(--color-info-hover);
}

/* Secondary button (outlined) */
.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-background);
  border-color: var(--color-primary);
}

/* Success button (green) */
.btn-success {
  background-color: var(--color-success);
  color: white;
}

/* Large button variant */
.btn-lg {
  padding: var(--spacing-lg);
  font-size: 18px;
  border-radius: var(--radius-lg);
}

/* ========================================
   Cards
   ======================================== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  text-decoration: none;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

.card-description {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  margin: var(--spacing-xs) 0 0;
}

/* ========================================
   Navigation Grid (Home page)
   ======================================== */
.nav-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  text-decoration: none;
}

.nav-icon {
  font-size: 32px;
  line-height: 1;
  flex-shrink: 0;
}

.nav-text h3 {
  margin: 0;
  color: var(--color-primary);
}

.nav-text p {
  margin: 4px 0 0;
  font-size: var(--font-size-small);
  color: var(--color-text-light);
}

/* ========================================
   Steps List (Unfall/Panne pages)
   ======================================== */
.steps-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step-counter;
}

.step-item {
  position: relative;
  padding-left: 48px;
  padding-bottom: var(--spacing-lg);
  border-left: 2px solid var(--color-border);
  margin-left: 16px;
}

.step-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: -17px;
  top: 0;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-small);
}

.step-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.step-content {
  color: var(--color-text-light);
}

.step-content ul {
  margin: var(--spacing-xs) 0 0;
  padding-left: var(--spacing-lg);
}

.step-content li {
  margin-bottom: 4px;
}

/* Emergency step variant */
.step-item.step-emergency::before {
  background-color: var(--color-emergency);
}

/* ========================================
   Status Badge (Contact page)
   ======================================== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 100px;
  font-size: var(--font-size-small);
  font-weight: 600;
}

.status-available {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.status-unavailable {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

/* ========================================
   Contact Card
   ======================================== */
.contact-section {
  margin-bottom: var(--spacing-lg);
}

.contact-section h3 {
  color: var(--color-text-light);
  font-size: var(--font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
}

.info-box {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border-left: 4px solid var(--color-info);
}

.info-box.info-warning {
  border-left-color: var(--color-warning);
  background-color: var(--color-warning-light);
}

.info-box.info-emergency {
  border-left-color: var(--color-emergency);
}

/* ========================================
   Checklist (Documentation page)
   ======================================== */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
  transition: background-color 0.2s;
}

.checklist-item:hover {
  background-color: var(--color-background);
}

.checklist-item input[type="checkbox"] {
  width: 24px;
  height: 24px;
  margin: 0;
  flex-shrink: 0;
  accent-color: var(--color-success);
  cursor: pointer;
}

.checklist-item label {
  flex: 1;
  cursor: pointer;
  line-height: 1.4;
}

.checklist-item.checked label {
  color: var(--color-text-light);
  text-decoration: line-through;
}

.checklist-category {
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--spacing-md) 0 var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.checklist-category:first-child {
  margin-top: 0;
}

/* ========================================
   FAQ Accordion
   ======================================== */
.accordion {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-category {
  margin-bottom: var(--spacing-lg);
}

.accordion-category-title {
  font-size: var(--font-size-body);
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
}

.accordion-item {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.accordion-item:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.accordion-item:last-child {
  border-bottom: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: none;
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: 600;
  text-align: left;
  color: var(--color-text);
  cursor: pointer;
  min-height: var(--touch-target-min);
}

.accordion-header:hover {
  background-color: var(--color-background);
}

.accordion-icon {
  font-size: 20px;
  color: var(--color-secondary);
  transition: transform 0.3s;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  margin-top: auto;
  padding: var(--spacing-lg) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: var(--color-text-light);
  font-size: var(--font-size-small);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

.text-small {
  font-size: var(--font-size-small);
}

.text-muted {
  color: var(--color-text-light);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden {
  display: none !important;
}

/* ========================================
   Legal Pages (Impressum, Datenschutz)
   ======================================== */
.legal-content {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.legal-content h2 {
  font-size: 18px;
  margin-top: var(--spacing-lg);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  color: var(--color-text-light);
}

/* ========================================
   Emergency Selection (Home page variant)
   ======================================== */
.emergency-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.emergency-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--color-surface);
  border: 2px solid var(--color-emergency);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-emergency);
  font-weight: 600;
  transition: background-color 0.2s, color 0.2s;
}

.emergency-option:hover {
  background-color: var(--color-emergency);
  color: white;
  text-decoration: none;
}

.emergency-option-icon {
  font-size: 32px;
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (min-width: 480px) {
  .container {
    padding: var(--spacing-lg);
  }
}

/* Ensure proper display on notched devices */
@supports (padding: max(0px)) {
  .container {
    padding-left: max(var(--spacing-md), env(safe-area-inset-left));
    padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
  }
}